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Mammoth Energy Services

Name Holding Trade Value Shares
Change
Change in
Stake
WC
1
Wexford Capital
Florida
$117M
V
2
ValueWorks
New York
$17.4M -$506K -100,063 -3%
Vanguard Group
3
Vanguard Group
Pennsylvania
$3.39M +$647K +127,933 +25%
BCM
4
Bridgeway Capital Management
Texas
$2.41M -$89.5K -17,700 -4%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$1.63M +$105K +20,710 +7%
BlackRock
6
BlackRock
New York
$1.52M -$114K -22,521 -7%
Millennium Management
7
Millennium Management
New York
$1.24M -$194K -38,290 -14%
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$1.09M
Two Sigma Advisers
9
Two Sigma Advisers
New York
$875K +$50.6K +10,000 +6%
Renaissance Technologies
10
Renaissance Technologies
New York
$713K +$178K +35,100 +35%
Susquehanna International Group
11
Susquehanna International Group
Pennsylvania
$585K +$356K +70,281 +177%
Bank of New York Mellon
12
Bank of New York Mellon
New York
$550K -$41.8K -8,270 -7%
Squarepoint
13
Squarepoint
New York
$453K +$431K +85,217 New
Northern Trust
14
Northern Trust
Illinois
$445K -$2.76K -546 -0.6%
Acadian Asset Management
15
Acadian Asset Management
Massachusetts
$366K +$315K +62,349 +960%
WG
16
Winton Group
United Kingdom
$335K -$29.3K -5,785 -8%
Two Sigma Investments
17
Two Sigma Investments
New York
$315K +$45.3K +8,963 +18%
Stifel Financial
18
Stifel Financial
Missouri
$296K
Cambridge Investment Research Advisors
19
Cambridge Investment Research Advisors
Iowa
$293K +$2.53K +500 +0.9%
T. Rowe Price Associates
20
T. Rowe Price Associates
Maryland
$236K +$224K +44,270 New
Citadel Advisors
21
Citadel Advisors
Florida
$216K +$97.1K +19,193 +90%
Invesco
22
Invesco
Georgia
$202K -$954K -188,539 -83%
Goldman Sachs
23
Goldman Sachs
New York
$196K -$132K -26,022 -41%
ECM
24
ExodusPoint Capital Management
New York
$141K +$83.4K +16,497 +164%
NSEDCP
25
NJ State Employees Deferred Compensation Plan
New Jersey
$128K